LiftMaster LJ8950W LJ8950W Manual - Page 7

Live Shaft Door Requirements

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Installation Live Shaft Door Requirements For live shaft door installations the door sprocket is attached to the door axle which spins the drums and rolls the door curtain. MINIMUM SIDE CLEARANCE A minimum of 11" (27.9 cm) clearance on the outside of the door opening is required for standard wall mounting or outside mounting using the optional mounting bracket Model 3950MB. A minimum of 3.75" (9.5 cm) clearance on the outside of the door opening is required for inside mounting using the optional mounting bracket Model 3950MB. MINIMUM SHAFT LENGTH The door shaft must extend past the drum bracket a minimum of 1.5" (3.8 cm) (2.5" [6.3 cm] recommended) for installing the door sprocket. Drum Door 2.5" (6.3 cm) Door Shaft Drum Bracket Door Guide 11" (27.9 cm) Min. Clearance Outside Mounting 3.75" (9.5 cm) Min. Clearance Inside Mounting 7

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7
For live shaft door installations the door sprocket is attached to the door axle which spins
the drums and rolls the door curtain.
MINIMUM SIDE CLEARANCE
A minimum of 11" (27.9 cm) clearance on the outside of the door opening is required
for standard wall mounting or outside mounting using the optional mounting bracket
Model 3950MB.
A minimum of 3.75" (9.5 cm) clearance on the outside of the door opening is required for
inside mounting using the optional mounting bracket Model 3950MB.
MINIMUM SHAFT LENGTH
The door shaft must extend past the drum bracket a minimum of 1.5" (3.8 cm) (2.5"
[6.3 cm] recommended) for installing the door sprocket.
Live Shaft Door Requirements
Installation
2.5" (6.3 cm)
Door Shaft
Door Guide
Drum Bracket
Drum
Door
11"
(27.9 cm) Min. Clearance
Outside Mounting
3.75" (9.5 cm) Min. Clearance
Inside Mounting